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-rw-r--r--3rdparty/bgfx/examples/43-denoise/shared_functions.sh25
1 files changed, 25 insertions, 0 deletions
diff --git a/3rdparty/bgfx/examples/43-denoise/shared_functions.sh b/3rdparty/bgfx/examples/43-denoise/shared_functions.sh
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+++ b/3rdparty/bgfx/examples/43-denoise/shared_functions.sh
@@ -0,0 +1,25 @@
+/*
+* Copyright 2021 elven cache. All rights reserved.
+* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
+*/
+
+#ifndef SHARED_FUNCTIONS_SH
+#define SHARED_FUNCTIONS_SH
+
+vec2 GetTexCoordPreviousNoJitter(vec2 texCoord, vec2 velocity)
+{
+ vec2 texCoordPrev = texCoord - velocity;
+ return texCoordPrev;
+}
+
+vec2 GetTexCoordPrevious(vec2 texCoord, vec2 velocity)
+{
+ vec2 texCoordPrev = texCoord - velocity;
+
+ vec2 jitterDelta = (u_jitterCurr-u_jitterPrev);
+ texCoordPrev += jitterDelta * u_viewTexel.xy;
+
+ return texCoordPrev;
+}
+
+#endif // SHARED_FUNCTIONS_SH